Yorick bugfix needs to be re-thought, or compensated for
So if you read patch notes, Riot decided that ghouls not drawing tower aggro on Yorick is a bug and is removed.
It is understandable that this can be seen as a bug - although I always thought it was intended, since the only way for that to happen is if the enemy draws minion wave aggro on themself without any action from Yorick's side (since otherwise you would draw aggro anyway).
What is more important to me though is that it makes Yorick's kit conflicting itself, and will make him drop like a stone.
Yorick is all about pushing. He needs to summon ghouls to push, since his pushing power is below pathetic if he doesn't.
But with that change, he can no longer pressure the enemy tower, since the ghouls will draw the aggro on him, without him having any choice since the enemy can draw the aggro on themself by auto-attacking Yorick. It's like having in-build thornmail that you can't really deactivate.
I'm usually for fixing bugs no matter what, but this particular interaction was not a bit of bonus damage or something, it was a thing that allowed Yorick's kit in it's current form to function.
If that bug is to be fixed, some changes need to be made to ghoul aggro so that enemy can't draw aggro without Yorick's input. Then again if ghoul will never aggro on an enemy attacking Yorick, he gets hurt a lot in bad matchups, which would need compensation still.
I'm really disappointed with Riot's balance team this time, because it is obvious that this change was let through with little to no testing, because someone on the balance team thought it was a no-brainer. Well, it isn't.